/*
 * Copyright 2017-2019 Allegro.pl
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Equalable } from "immutable-class";

export default function nullableEquals(a: Equalable, b: Equalable): boolean {
  if (a === null) {
    return a === b;
  }
  // Immutable equals short circuits to null when other is null
  return !!a.equals(b);
}
